I am about to take out my old liner and install a new liner on my 24 x 12 AGP.
I feel I have the jist of what needs to be done, but I might be missing/mistiming a step or two.

I empty the pool completely of all water.
I unscrew the fixtures i.e. the skimmer
I uninstall the wall railing, and the tube (not sure of both their names) that hold the old liner in place.
I cut the liner into manageable pieces and remove.
I spray the pool are with pesticide (some form of bugs being the need for a new liner in the first place (any pesticide brand/type suggestions would be appreciated)).
I unroll the pool liner whilst within the pool walls.
I start overlapping the liner over the wall, and tie down momentarily with clothes pegs.
When the wall is fully overlapped, and the base of the liner is on the ground of the pool I start putting the tube on.
I then put the wall railing over this.
I put 4/6 inches of water in the pool.
I stamp out the creases, and then cut holes for the return and skimmer.
I screw in the fixtures.
I fill up the pool to normal level.

Any advice would be much appreciated.
Thanks.